CAJ | 학술논문

介绍了用Verilog硬件描述语言编程在FPGA中完成雷达模拟辐射源多个波段信号参数的实时检测和处理,包括实现数字下变频(DDC)和信号参数实时测量,数据实时传输等.利用数字接收机的方法对宽带高中频信号进行数字下变频,得到数字正交的基带复信号,用CORDIC算法迭代求相位,再利用直接相位差法求信号频率参数,用计数器法求脉宽和脉冲到达时间(TOA)参数,最后对测得的结果参数打包形成脉冲描述字(PDW)并实时上报.该软件已在某雷达产品中得到验证.
개소료용Verilog경건묘술어언편정재FPGA중완성뢰체모의복사원다개파단신호삼수적실시검측화처리,포괄실현수자하변빈(DDC)화신호삼수실시측량,수거실시전수등.이용수자접수궤적방법대관대고중빈신호진행수자하변빈,득도수자정교적기대복신호,용CORDIC산법질대구상위,재이용직접상위차법구신호빈솔삼수,용계수기법구맥관화맥충도체시간(TOA)삼수,최후대측득적결과삼수타포형성맥충묘술자(PDW)병실시상보.해연건이재모뢰체산품중득도험증.
Verilog,a hardware description language,is used to detect and process parameters of signal at multiple bands of radar simulation radiation source on FPGA,including realization of digital down conversion(DDC),real?time signal parame?ters measurement,real?time data transmission and so on. Digital receiver carries out digital down conversion of broadband and intermediate and high frequencey signals to get orthogonal baseband signals. CORDIC algorithm is used to calculate phase,and then the signal frequency parameter is determined by utilizing the direct phase difference method. The results of time?of?arrival (TOA)of pulse width and pulse are obtained by the counter method. Finally,the measured parameters are packaged to form pulse description words(PDW)which are uploaded in real?time manner. The software has been applied and verified in a certain radar product.